i was told that the ports are the same between the 420a and the 4g63. not the flange just the exhaust ports. i want to buy a sidewinder manifold and put the rs 420a flange on it. i was told that it can be done.has any body else heard of this?
when i put the 4g63 many up to the 420a block the ports matched. they sell the rs flange on e gay. please chime in with your 2 cents any feedback is appreciated
thanx
kevin

 

no body knows anything ?

 

It would probably be easier just buying one of those block style turbo manifolds for the 420a. If the runners match up between the 420a and 4g63 then it might work.

 

i havethe log style from hahn , it came with the kit but i want one that looks more decent under the hood

 

ttt

 

i wouldnt do it unless you know agood welder ... just keep the hawns manifold