'89 roller-cam LA 360 w/Magnum heads - new roller lifters not pumping up

"Engine ID pad" - are you referring to a B/RB engine here?

I haven't seen a smooth ID pad on the LA's, only the engine casting number on the left side:



-Kurt

Look at the Front of block, Driver's side, just below where the head and block meet.

Look at pic 7&8 of KrazyCuda Sticky
http://www.forabodiesonly.com/mopar/showthread.php?t=285021