Jeff, I wouldn't say I seen alot of 10CC 2" main engine, not alot to look at /bcforum/images/%%GRAEMLIN_URL%%/smile.gif I seen mechanical fuel pump boosses blocked off alot of engine including the 1275 and as well have saw many that have the blanking plate. The 10CC engine represents one thing to me, a engine that fit within a class for SCCA racing, beside that nobody on the street gets excited about them, most want a 1275,and for good reason thats the motor all the goodies are offered for. Like I told Tony on the phone the other day, the 10CC is rare and important, but only to very small audience. I see no problem with building one for a street car if you want to, but don't go crazy with it, not many performance parts offerings, if you going to go over to the wild side, might as well do so with a 1275.
The 1098 didn't last long in the line-up, the 10CC even less. BMC wanted to get a tourquer engine, and they did so mostly with stroke over the 948, the 948 has a stroke of 3.00", and had no torque to speak of, the 1098 bore is only .060" bigger tha the 948, but the stroke went up to 3.300", the longest stroke of any of the A-series engines, the 1275 has a stroke of 3.200". The 1098 still hade the angle rods like the 948, so you could get them thru the bores, but the 1098 lost the silly pinch bolt on the small end on the connecting rods that the 948s had and had a closed end with a bushing, in fact lots of guys like to use the 1098 rods in the their 948s, in fact I have a nice set of 1098 rods, if anyone needs a set.