Difference between prohormones and steroids

I have just bought 2 fords n tractors in france were I live 1 n9 and 1 n8 the n9 has had a modification in 1965 as the log book says the mod is a 2 cylinder diesel it fits like a glove with no cuts of bangs or welds I can see the motor had not run for 10 years and with clean fuel and a battery started the tractor drives grate pulls well could any one tell me if they have seen this modification to a ford n9 before and shed any light on its motor I have pics if any one is interested please let me no would be happy to send pictures of her many thank david young

Difference between prohormones and steroids

difference between prohormones and steroids

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