N20zuki

I picked up a 2001 5.3 with 706 casting heads with 120k on the clock last weekend from a salvage yard, I stripped it down to a short block was going to throw MLS gaskets and ARP studs on it when re-assembling. Im wondering though which cam, springs and lifters I should go with, The motor is going in a 87 Monte Carlo with a T56 behind it and plan to drop a LS6 intake and longtube headers on the motor. It will be a weekend fun toy that I am building to autocross/road course. Im kind of new to the building LS series motors so I dont know what works well and what doesnt, any insite?