Jegs Speedmaster intake for small block 318 ?

Yeah just a stock 318 up grade to a 4 bbl and headers. Working on a small budget. Reason for asking is someone with a Competition Products one had vacuum leak problems and couldn't get the car to run right. Swapped out the manifold with a Edelbrock and no more problem.They look identical.
Just one of those "If it sounds too good to be true,it isn't" stories. I hate to buy it only to find out it sucks.