Sorry for a question that's been asked million times but the search feature on a site this size tends to generate lots of off topic threads.

Have a box stock 03 LQ9 that I got with intentions of doing a swap into my 87K30 with a tired 350TBI.

I'd had planned on subtle performance improvements like long tube's , tune and a small lift performance cam along the lines of a 2002+ LS6 model.

The question is when doing the cam swap I know the LS6 or equivalent springs are required , how about locks/retainers/rockers/push-rods from the LS6 that donated the cam?

Thanks , Jeff