Can some out there in mini land advise if a mini matic fresh air under the bonnet heater is the same as the one in a mini deluxe which was an extra at the time. If so, does anyone have one that they want to part with for a price.

Yes the matic heater was an option for late deluxe and Mini K I recall.
Sorry, I don't have a spare.

For earlier Minis, there were aftermarket options like the Smiths `beehive' heater. Some of us back then fitted a Cooper one.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

There is one on ebay for $20 at the moment. http://pages.ebay.com/link/?nav=item.vi ... 24&alt=web
Jonnoh on here owns it. viewtopic.php?t=91432

Thanks guys, I'll check out the eBay ad.