gkstar

Correct, the stock Wrx/sti top feed fuel rail bolt holes do not line up with side feed TGV bolt holes.

Photos to support evidence of figment mismatches. I have not tried the 07+LGT plastic manifold and probably at this point a little to far it to make the exploratory purchase. Unless someone has one super cheap 02-05 Top feed TGV two firmest issues with stock lines pic 1&2 1. as mentioned plastic manifold does not match up on inner. Approx 4mm off center. Two items to adjust fill and retap, remove brass inserts and potentially add brace on top of plastic then tighten 2. Tabs on intake hit lines. Possibly dremel tabs off on side feed from metal manifold. Purchased just the reducer pieces from Radium and bolt kit from IAG. Stock top feed fuel line attachment holes are narrower then side feed. Attempt was to “make” a conversion kit without doing new lines too. Could notch one of the brackets and add washers on bolt top and bottom to sandwich the piece but that is a little shady.

For those with experience in the sidefeed to topfeed conversion kits. Do the new rails provide any more support than a stock top feed rail would? Could you just use these from radium with stock top feed lines http://www.radiumauto.com/Injector-Seats-for-Subaru-Top-Feed-Conversion-Fuel-Rails-P628.aspx

the APS adapters(or similar) would have been first choice and most elegant, but alas I fumbled through an attempt to make the older top feed tgv's work with our manifold. Ordered a real set of 02 wrx ones to look at how much off the bolt holes are that @m sprankfor my curiosity. Will keep the thread updated once they arrive

Search intake manifold. They are sometimes listed as intake manifold lower.

So I will hold the L on TGV’s. Should have been more careful with purchase. But why will the tgv from a metal manifold not work on a plastic manifold. After market tgv’s do not make that distinction.

So the 92-X had the EJ20 like any WRX from 03-06 but were topfeed. Where the STI in 04-06 are sidefeed like the LGT. Here are some more photos including intake manifold set on one TGV. If there are more angle requests lmk I can take them later

I will take more photos. The stud aligns with one of the attachment points on the intake manifold.

Well the 02-05 WRX was on the list of ones that fit and the 92-X Saabaru is y a facelifted 05 WRX so I expanded the search. The WRX ones where hard to find Below is a pic of the TGV and the sensors

Started down this path recently. Thank you to everyone on their research. Found topfeed TGV from a Saabaru 92-X which is the correct 3&2 pin config, picked up an extra intake manifold and gaskets. Everything appears to line up from TGV and up. What am I missing on connection to heads as the gaskets and phenolic spacers seem to be universal? Costs to date TGVs $75 top feed fuel lines $100 spacers and gaskets from grimmspeed $108 extra manifold to test which I wish I would have grabbed from @Underdog $120 I have modded 575cc top feed injectors I need to check with a tuner if I can plug and play to get going or will look into 1050s or pick up stock 07+ top feeds