That's a step head , quench dome, piston. If he doesn't have the money to balance the rotating assembly he certainly doesn't have the money to make those pistons fit properly. The questions elude that he doesn't have the skills, or equipment available, to do it himself either.
Quote: Factory 440 pistons (10:1) weigh in at about 867gr. the later smog motors are in the 850 range. TRW (Speedpro) 2355 are 872gr and 2266 876gr.
When and where did you get the numbers for the 2355 ?
