best place around and only place to go is dez racing in seekonk mass 508 336 6588 www.dezracing.com.He has been in many mustang mags and has built many 700 hp + motors that i know of and he is a great guy check it out
There's a place called SGS automotive in Dillsburg, PA. Formerly, Kauffmann Motorsports, SGS automotive has built a great reputation. Dave Guy really knows what he's doing. He installed and tuned my combo. I've seen pics of his cars in all the mustang mags. Give em a ring and see what they can do.
Who builds Dez's mod motors now that Mondo Bob died? Bob had his machine work done at ABT in Holliston MA and then assembled it all himself. Maybe try them to start or see who Dez is having build his motors.