Have vt-7 super bronc engine question

#1
I have a vt-7 super bronc I have been working on cleaning up. Gas tank rusty, fuel line shot, spark plug wire broken. I am curious if it's worth putting the time in to fix this stuff up and stay original OR I found a 7hp tecumseh engine from a snowblower with electric start that runs for $75. What do I have to do for an engine swap?
I attached photo of swap candidate.
Thoughts??
Thanks
 
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