Dumb question (about intake manifold gasket) for the day

I'm going to use the fel-pro I got at o-reilly's, we'll see what happens. I will NOT be using the cork gaskets though. I'm glad I'm not the only one that had this problem. I swear it was sealed when I did it the second time around, but I was getting HORRIBLE mileage driving moderately, and my heater stopped working (not that I needed it yet, just wanted to check if everything worked). New questions:
1) A vacuum leak at the intake would cause no coolant flow through the heater, thus causing no heat, correct?
2) What's the best drill bit to use to drill on the head and prep for heli-coils? I've tried two bits already, got all done but 2. Luckily, they are exchanging them for me. I put oil on them, didn't go to quick, but they still keep snapping without even much pressure. The second bit was a $16 titanium one, 25/64. Luckily I got it out! Also, might as well post this in here. I'm looking at getting a new distributor, and found this one. Thoughts/opinions? I'd like to delete the ECU and ballast resistor completely, and clean up all the melted insulation behind it and all down the engine bay! This distributor is CHEAP (money wise), would I be getting what I paid for?
http://cgi.ebay.com/ebaymotors/?cmd...40281&sspagename=STRK:MEWAX:IT#ht_5916wt_1162


Question 1, no. A vac leak will not cause a no heat condition.

Question 2, I use the titanium coated drill bits all the time and have no issue with snapping, they should work for what you are doing just fine.

As far as that distributor assy., it sounds like a cheep quick alternative to points or a failing system but if it were me I would opt for the mopar performance system. Keep in mind that cap is gm style so you will have to buy new wires too if you do go with it. Looks like some kind of cheezy chinese dist. to me.

As far as the intake gaskets go, never use end gaskets with an aluminum intake, the dissimilar metals expand and contract at different rates and the gaskets will work themselves out and you will have a leak. Cut the head gasket tabs off, careful not to lose them into the engine, use black RTV or The Right Stuff on the ends and dont look back.

One more thing , the only way a vac leak could possibly affect heat is if your heater control valve is vac operated and the vac loss was causing it to not operate but I would think you would have other complaints too if that were the case of that big of a vac leak.