I  have the same problem with this kit.  I  have searched the internet high and low for a 1/12 distributor but to no avail.  The wires are easy, can get them anywhere but the closest I can find to a cap is 1/16.  Anyone have any ideas where I may get one?
 
	This looks great, thanx for the tip!  Has a few other pieces that may work better as well, particularly the carb.