theres so much choice if i was on a budget i would use a rover v8 you can get various adaptor plates to use a few ford g boxes to renault 25 ones the v8 is istant power/torque without tuning.if i was throwing money at it yb all the way this will vertually fit straight in use a t5 you might have to alter g box tunnal. cossie rear end im getting all steamed up just thinking about it. i see you live not to far from me do you own a certain breakers yard near st day