Should I go through with it?

Hey everyone, I recently picked up beautiful 84 MK2 Celica Supra, for $1,500.
They go for atleast 5k all day.

Lately I've realized that I like more modern vehicles, and that just happens to be an 04 STi WRB Subaru..

I posted an ad looking to trade my car for one and add money to that for one, and I've received an email wanting to go through with it.

So, I have no idea if I want to, my Supra weighs nearly 3000 pounds, running 160hp, it's pretty slow..
I was planning on dropping a 2jz in it but I'm not.

I really want to go through with it, but would it be something I will regret in the near future?

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^ My supra.

I'd say go for the subie, it'd be worth it in the end due to mods etc etc.

Supra. Be different.

Stay with the supra in my opinion 
Such a beauty and hard to find in that condition man