I was told 3 weeks and it ended up 5 months. Whenever he said he needed a part, it was there quickly, I drove to Cincy for a head, he had it in 3 days from when he said he needed it. Mike also knew I had 3 more engines waiting for him after he got this one done. Needless to say, they went elsewhere. But, 0 problems with this one after a year.
The other engine he did came apart pretty quickly, the fourth time it was used. 3 other independent engine buiders said that the rod bolts were way over torqued. Destroyed the block, crank, rods, pistons, and oil pan.