Fast Marina Magazine

Also have a look at Aldon...I have been impressed with mine so far.

Plenty of recipes and considerations in Peter's book...well worth reading in detail.
I've got a +60 block with an big-valve head (originally from MGB 72-74 I think), standard TC/MGB cam, TC inlet manifold and twin HS4 (AAA needles) plus an Aldon dizzy (with the correct curve for the manifold vacuum ...

Yes. The MGB spigot bush recess in the crank is larger than that in the Marina...driven by the difference in gearbox input shaft diameters. IIRC some early Marinas (to 1974, according to Peter Burgess) were fitted with a removeable insert in the crank, which, when removed opened it up to MGB-size ...