Engine question

["Aidan Corcoran" <spitfire@acquirer.com>]

Guys,

I finally had the courage to check up my engine number (GAxxxxHE) and
decided it's a Herald 1200. Although I've owned the car for a year, I've
only just compared the V5 (pink slip) engine number with what's in the car,
and of course they are different.

Whereabouts would I be able to find a genuine Mk 2 (1966) Spitfire engine,
and how much is it going to cost. I'd prefer a location in the UK, but
anybody's experiences of changing engines would be useful.

TIA

Aidan
Mk 2 FC 83365