The Comp and Erson cams really aren't much bigger than a stock 360 cam.

My favorite cam for a 318 is the stock 340 cam.

Both the 340 and 360 stock replacement cams are way cheaper than an aftermarket cam last time I checked.

Comp $225 - summit
Lunati $150 - summit
Erson out of stock everywhere I could find a listing

340 cam $90 - Rockauto
360 cam $78 - Rockauto

None with lifters as that ought to be a wash as far as cost.

340 cam might be a bit too much for your truck, the 360 cam ought to be ok.