Judging by your username, I'm assuming that you have a 91 Dodge.
Recently I bought a 1990 Dodge 1 ton for parts. A previous owner had removed the TBI and installed a Carter AFB and Edelbrock intake on it. The stock (in tank) fuel pump was retained, and an aftermarket pressure regulator was plumbed in line. Then right after the regulator, an inline filter like I've never seen was installed. It has one line in... and 2 outs... One out goes to the carb, and the other to the return line. /forums/images/graemlins/crazy.gif
Seemed to work as the truck runs... but I beleive it's not running right as I'm not sure that the distributor is advancing since it has no vac advance /forums/images/graemlins/confused.gif