All Merkurs use the same 2.3Ts as the SVO, TC and the Mustang GT 350. The only difference between the 2.3Ts is the EEC I think and some are not IC. The thing about the Volvo head is you have to plug all the oil holes in the head and redrill new ones that match up with the ones on the 2.3 block. This takes time and really knowing what your doing. Then everything has to be fabercated like the exhaust manifold, intakes, and brakets. Also I would stick to EFFI if you go thise route..