Is it worth doing anything with a Tecumseh OHH55?

#1
I have a parking lot vacuum with a Tecumseh OHH55. Its nice but a very specialized piece of equipment so I thought about pulling the engine. I have to be honest I have become a clone lover. I do know Tecumseh engines are more expensive to modify. ANy comments?
 
#2
I have a couple of stock ones and they run great. My friend did some work to his: billet connecting rod, some minor head porting, header and an adjustable carb. It runs awesome and has really decent torque too.
 
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