Just had a good idea! how about i copy the front frame and make a 2nd that i place 265mm infront of the other.
Think something like this would work ok? this would allow me to use the full length of the bay for a RB25DET and give a inch or so to spare. would need to brace it more to compensate but i prefer this to redoing the hole engine bay.
duno if the suspension would be ok tho.