Small cap HEI's

[Lippyp]

Just fitted an edelbrock performer manifold and tried to fit a stock HEI in to replace the mallory twin point but I can't get the damn thing down the hole even with the cap off.

Can anyone reccomend an aftermarket small cap HEI? I'm guessing the still need an external coil, is that the case or do they also have a coil in the cap like stock? If so will I need a different coil to the one currently in use for the points?

It needs to be something I can get from a supplier here in the UK ideally as I want it this week. Are the ebay specials worth having or should I stump up the extra for a decent brand name like mallory or MSD?

Thanks