I’m planning using a Volvo (b5234t3) engine with the Manual ECU as the donor engine.

I know this had been done before but I can’t find any record on here from the search history.

Is it true that the M90 will be okay, I’ve heard that ratios are pretty bad? What is the best RWD box that will marry-up to this? And is it easy to keep with the stock manual ECU and wire it up. I’m hoping the pin outs or accessible online somewhere.

Volvosport on here is very up on all things Ovlov and might be able to advise.

Other members Benzine and matt claydon have both fitted Volvo motors in their Indys IIRC so might have some useful info for you.