I reckon leave the engine till the car is built and you have had a chance to give it a shake down. A mate with a kent engined westie did exactly that, he had a spare engine in the shed and gathered all the tuning stuff for next to nothing on a grab when its cheap basis. Got some really nice stuff for nine parts of nothing. 
 
Bob 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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