Hold out for a 5.3?

[67pete300]

I've been surfing craigslist for a good 2wd 5.3/4L60 donor vehicle for my 65 C10. They seem rarer than hen's teeth (certainly in the price range I'm looking at--don't want to pay more than $2500 which is what I'd probably pay for the setup from ebay).

The 2wd trucks seem to mostly have the 4.8. I'd prefer the 5.3 (or 6.0 obviously but trying to keep costs down). I have a bead on a good option (just over 150k miles) with a 4.8 for a good price.

Should I hold out for a 5.3 or jump on the good condition 4.8 that is a decent deal? Will I feel the difference in my street driven and otherwise stock C10?