99 4.8 with 5.3 crank, ls1 rods and stock 4.8 pistons, Patriot 226/226 Dur. @.050 .585"/.585" Lift 112 LSA, 918 springs, comp pushrods,(do I need new lifters with a 100k motor?) 3200 stall, ls1 intake since I have a 98 ls1 computer and harness, 28.8 injectors, mail order tune, mid length ls1 headers, true duals with h pipe, and custom air intake. I am running 3:73's, eaton posi and a 29.5" tall rear tire. How does this sound? Will it make good numbers and I guess it will be 93 octane for me right?
Thanks and let me know what you think.

Are the 5.3 and 4.8 pistons interchangable???????