Is this engine builder nuts?

For what it's Worth.
Below you can see my 'Teen. I have no idea what the "HP" number is on it.
It is in my '75 4 Door.
It is possibly the funnest thing I have ever driven.
Nice on the street. Plenty to cook the 245's in the rear any time I want to.
Still not too bad in the 65mph range.
Cheapest fun I have ever had and I have had a few 'Fun' Cars.
Question is do you want a 'Fun' Driver or a Serious motor?
I would be afraid of hurting my motor if it cost me $5500.
My teen? Not worried about it at all....