i just did the trickflow top end kit, i also put in 24# injectors, matching mass air, fuel pressure regulator and a 255 fuel pump, since i did all this the car stalls, it runs good but when slowing down to a stop light it stalls, rarely it wont stall but the RPMs will drop to about 500, the pressure and timing are where thay should be

 

did you check all the vac lines?

 

Sounds like vacuum to me.. Check the upper intake, there could be a folded gasket, or something letting air in between the upper and lower intakes.. Also check all the vacuum lines behind the TB, they are hard plastic and are fairly brittle if they are the orig. 15+ yr. old lines. All of them must be hooked up correctly for the car to run properly, make sure you have all of the sensors plugged in.. OH and when I did H/C/I I had to turn up the idle a few 100 rpm's to get it to idle right with the bigger cam, might think about doing that.. not too high though, just keep messing with it until you have it just right.