There are plenty of ways to do a nice budget upgrade. But what exactly are u looking for?
Here are a couple ways to get some budget HP/tq.
U have a great start with the roller block. You could buy an aluminum intake manifold, get your heads done to accept a higher lift cam, buy a nice 210-220° @50 roller for torque, some nice roller tip rocker arms. Full length long tube headers with at least 1 5/8 primaries.
With simple upgrades like this u could have a nice little motor and not much money spent.