I like and use Manton pushrods for all my builds due to them making them when I order them. They don't have any shelf pushrods, all custom made when ordered.
The series 5 are my choice for race roller cam motors, I've seen 8 HP gain above 5000 RPM with no other changes than swapping out a set of Smith Bros,. 3/8x.120 wall to an Identical set of Mantons boogie up Ph.# 951-245-6565
I am a dealer for them and I can save you a little money on them, no a bunch, sorry blush They will drop ship them directly to you if you order them from me: Cab

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)