the gen 2 GM kit is getting harder to find. iv heard word its not in production anymore so my next choice would be to check with 1A tony in the body section. there is a door sweep thread going and he is very involved in the product. i may be going with a set of theirs.
HAWKS may have the gen 2 kit still. the gen 2 kit has lil cups that the top seal meets up with so when /if you get a leak the lil cup catches it and it directs it into a drain tube that runs thru the seal. the standard set lile comes stock on your car is the standard ol slice tip version.
as for your leaking, first make sure the top is pulling down enough/correctly. roll the window down and kinda firmly wiggle up and down on the top. there are adjustments behind the trim to pull the glass tighter and this may be your issue.
heres a link to that thread and you can reach Tony from this thread for your seals.
http://www.thirdgen.org/techboard/af...ow-sweeps.html (1A Auto Window Sweeps, anyone have them?)