"I really wouldnt run Pro1's on anything smaller than a 66mm/67mm with a P trim turbine wheel. All you can do is try though They could work great with that exhaust manifold and turbo combo"

i am planning on sleeving the block and running 20+lbs does that make any difference on the turbo size for the pro1's. I wish i was able to come in to the shop and ask the questions in person