I mainly use Tim Goolsby at Bullet (dealt with/have an account him for years and years going back to the Ultradyne days)...but I pretty much know what I want in terms of powerband/lift and duration based on cubes/headflows/Compression/gearing/stall and weight...and he helps pick the right lobe and spring requirements for how I intend to use the motor.

AND I would NEVER HESITATE to call Dwayne Porter (Fast68Plymouth) and get a Comp custom grind through him. Countless times we've come up with near identical grinds for Moparts applications. Guys would PM me and ask about a grind they either just bought from him (or were about to buy) and I think every time Dwayne picks the same basic grind, right down to the lobe spread and ICL. We must be kin somehow I think.