I run a hughes whiplash roller cam in my stock 91 318 with the #302 heads with comp 901-16 spring all stock roller non-adjustable valve train.

my combo in a 85 stepside

91 JY 318 100,000 + miles

Holley 6210 650cfm spredbore mech dbl pumper
Holley street dominator intake
hughes whiplash roller cam
hedman hedders 2.1/4 pipes 2 chamber muffs turn downs at rear axle
NV4500 5 speed
9 1/4 with 3.55 lockright locker 29x9.50x15 tire

nasty idle with plenty of torque on tap and gets 18+mpg