solarsplace,
i've held off trying recipes on this one - as i don't feel it exists on the site.
i think josh is the best to give advice on which is closest.
in the past i've used CK's - its good but it's not BIR take.
it's something that i'd like to crack - to cook for friends - i'm personally not a fan of the TA dish - i feel though with the ability to make a less sugar version then this would change.
i'm sure we have enough information to go on.
Derek Dansak looked interesting
http://www.curry-recipes.co.uk/curry/index.php?topic=3793.0
and so does tgad2007
http://www.curry-recipes.co.uk/curry/index.php?topic=3672.0
. i think i would look at ifindforu's tikka as a part of the paste. the barking mad video looks very good too as probably the starting point.