Glad I don't keep receipts
All kidding aside, I am sure I have over $30-35k tied up in my truck over the years. I have twin PT67's sitting waiting to be put on, but I don't feel comfortable running them with my current compression. I am not going to put a different piston/rings ($800) in a stock 4 bolt block as I will never get to really turn them up. Means a new block ($3500) plus head studs ($500) plus gaskets ($250) plus bearings ($300).
See how quickly that added up
that is using my current crank, rods, main bolts.
It is a very slippery slope one has to be ok with, let alone their family...