The problem with the mps is unless you can get your hands on a cheap 6 mps you will struggle to get a decent engine out a car.
They also aren't that easy to tune unless you spend big ££££ probably get 300bhp without spending too much but they also have weak con rods as there are quite a few that have blown rods out the side of the block.
I have a mk2 3 mps myself and love it but I would probably go for the frs engine from one being broken