Thanks for the info guys, Will the RB25 run ECU run the the 3L bottom end just to get me started? Im pretty sure im going to have to mod the sump pretty heavily to make it fit, But i think it will fit once that is dont, Another option is to run a dry sump.. Pricey but that may be what i have to do.. The Chassis should be ok for now while it is N/A i think?
Anyways, Im just in the process of hunting down a 25 top end, so i can start fitting the motor, If i try and fit it before i do this when i bolt the head on i might have clearence issues and have to fab mounts again etc etc mean while looking for wirring diagrams for the E36 and Rb25 also just doing some reasearch on how to do the 30\25 head conversion.. So far seems pretty straight forward.. hopefully in a few weeks ill have the gear and be rolling =)
Cheers for the comments!