There are two companies I would recommend you checking into. Dynamic has done several engines for me over the years, and they do a great job.
The second I am suprised that nobody has mentioned is North Bay Marine. Dave Todd, and Doug all do a great job.

-----Tyler first and if hes too busy for your schedule then call Dynamic. Dynamic has done race motors for me and are very good but not cheap. Of course,,,who is when you want it right :eek::eek::eek: ..........respectfully,,,,Mr.Bill

dont fool with any of those listed, ive used them all and none ever made a timely effort all there work was good but when the season is at best 4 mounths long you need a real business not monkey business you wand a quote for the scope of the job and a time line for getting it done call katech 586 791 4120 ask for warren or dave there a real business with a office staff and a real shop there NOT cheep but youll get results on par with sterling