Application should guide your decision. For an eventual goal of an N02 fed stroker and drag racing, SCJ's are the obvious choice. There's not going to be a significant difference in cost given the demands of the application.
In the short term, you may have to notch the pistons in the stock shortblock to allow clearance for the SCJ's altered valve angles.
In the short term, you may have to notch the pistons in the stock shortblock to allow clearance for the SCJ's altered valve angles.