Cheapest route on getting engine in my 55 GMC Truck

[Lifted07Duramax]

I have a 350 that was out of a 79 Impala engine needs to be rebuilt.

I dont know of a lot of sites that sell rebuilds or sites that sell reman engines for good prices.

What I do know is my budget is $1,500 MAYBE $2,000 if it was a good build with descent heads on it.

I dont know the cam specs but its a crappy cam thats for sure so Id want a new one of those.

The intake is a edelbrock 2101 I think and I know the heads are restrictive heads. But if I can get away with reusing the heads for now and upgrading later when I have more money to put into it Id go that route.

So what do you all recommend? Buying parts and paying shop have it rebuilt with a better cam installed or buy a reman already put together and just need to slap accessories, heads, intake and carb on it?

Lastly what are 3 descent choices for a cam to go with for good low end power but also able to put out 350hp with the right heads to match the cam