If you're going to drag race at all, Vortech hands down. Ultimately the PD will give you more power only because it's a 9#er. However the A-trim is easily upgraded to 10 #s. The PD is silent and the Vortech sounds bad!! Get the Vortech!!
The oil sending line screws into the block where the pressure sender is, and the return line is just a hole drilled into your pan to return oil. It's very simple for anyone with mechanical skills.
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92 GT, 4:10 gears, centerforce clutch, 6# powerdyne blower, bbk h-pipe, flowmasters