I Need Engine Experts! 340 Roller Lifter and Pushrod Issue

Morel hydraulic roller lifters, which are what you have in there, are the best hydro rollers you can use in a SB Mopar. The oil band is lower than others, so the band stays in the bore. The ones in my 273 clear just fine, but my saving grace is I used late 80's 302 heads, which have bigger push rod holes, plus my cam is itty bitty compared to the OP's cam. If I had to guess, I would say the ones Steve posted the pic of are solid rollers for a high HP small block race motor.