Perhaps someone can help me out. Link below sell kits for GTOs BUT they list that a kit is available to suit 6g74 for people who converted from 6g72 to 6g74 for gto

http://splitsecondmotorsports.com/3sexhaust.htm

Okay a question which 6g74 engine variants came facing the other way (compared to our engines). From what i know GTOs were only offered with 6g72.

Another question 6g74 they are talking about is obviously DOHC variant, so in theory manifold will NOT fit out engine due to exhaust ports being oval so manifold will have to be modified?

Yeah i don't think much of their kits would be salvagable for a SOHC 6g74. You still reap the expenses of having manifolds made up. I'd be looking at RPW to source manifolds or someone in the US which provides something similar for their diamante.

Myself i'd be looking into dropping a DOHC 3L/3.5L conversion. You could check this by check fitting a 3L SOHC 12v from a 2nd gen to a 3rd gen chasis and gbox.

Depends how much you like your magna.