I was going to swap an 8v engine with good box and power,into my mk2 to replace my engine which needs new box and the power-150k.
Prob is that new 130k engine smokes a bit when you drive it hard-125mph hard!
Does a smokey engine mean trouble?

?
My original engine has had new cam belt and been set up,ect ,ect.The new engine i have no history of.
Smokey engine used to mean stay away in my day!!
But it only does this when driven naughtily

Was just going to swap box and power-but this way could be easyer
Any advice much appreciated