I was just looking at some race regs , actually for the roadsport series HSCC was the rsport kit offered before 79 ?

and i mean the twin carbed 1.9 343 engine specs .

Apparently not

http://autopendium.com/modtypes/1342-Vo ... LS-R-Sport

I wrote that

The B19 R-Sport came in with the first B19 cars in 1981.

There was an earlier B14 based model with an 'R-Sport kit', but it was only a cam, exhaust, and a few other bits.

cheers

James

Off Topic - nice write up on redblock tuning in Practical Performance Car, Dave!