78 caprice needs help!

Hi, I have a 78 caprice 350 SBC is the mexican made one, also I am in Mexico, I have invested on some stuff and I really expect a great change, but besides more gas consumption car is the same, can somebody help me and send me some tips to make my invest work?
I have installed. Edelbrock 1406 carb, moroso carb gasket 1", msd 9 mm cables, dui hei coli high voltage, edelbrock performer intake, msd 6a, and stock spark plugs at .055", 105 amp alternator.
As far as I know all of these changes should be doing tire burned, I am a little dissaponted, maybe I do not know the right specs to squeeze all the equipment in my car, any help is welcome I want to be the fast car down here!

I had the same problem with my 78 caprice where there was a huge loss of power, in my case it was the catalytic with 3 pounds of backpressure, tons of unneeded emission crap was removed, the tranny vaccum modulator was clogged, and the distributor was 180 degrees off- To this day I'm surprised the car even ran, now with all that taken care of it's quite difficult not to spin the tires everywhere I go. Hopefully this may give you an idea for some things to check, by the way, I am still using the stock engine and carb. Best of luck to ya and I hope it's something simple.

Thanks Jeff, my car does not uses cat. conv. and distributor was changed to a Pertronix flame thrower, I really do not know what is happening with it, I appreciate the help.

I forgot to mention that I have 2 flowmasters and 2 2 inches exhaust pipes.

Please help!
Also if anybody know how to wire the wipers? I bought a timed switch and motor from a 84 I supose that an extra wire should be conected, does anybody know how?
Thanks.

Ok, I have retuned all the car and is still not burning tires, I will try to close spark gaps to .045" does anyone knows something about the crane hifire 6A I am thinking on replace the msd for this one, also I really will appreciate help on the wipers issue.
Thanks.