1986 block, 1987 heads- CAM HELP

[Bridgeman57]

I bough an engine with TBI and I’ve swapped it to carb. I want to put in a new camshaft but not sure what all I should replace because the cam in the block is setup for TBI. Because the degree would be off center a little. Would the stock cam be alright? And if I do add a cam, would I have to install new lifters, rods, valve springs, timing chain? Or would simply moving the cam timing a few degree be easier then spending roughly $500 more into a ****ty stock engine. Or just leave the cam alone and run it?

Suggestions and advice would be great.
Thanks