getting a regular bike after my battery fails?

man I ordered the kit for the trek I was hoping since I dont ride it as much I could go without nome my thumb told me nope. I ordered the kit yesterday today I see its on sale 250.00 less. ouch. but I shut ordered it again with overnight shipping so I get it Friday and even the restocking fee I save abut 180.00 at least the trek I can use a standard shimano 12 speed 11-36 cassette no changing the freehub. plus the chagrin seems to work with 12 speed too.
 
yes because I am using the road cassette. I dont need a 11-51 on the trek. I found out its the 10th or 9 size cog that demands the microsplne freehub. so a cassette with 11t can be either.
My only question is if it is a "Road HG" freehub body. It is longer than the "MTB HG" one.
 
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