But in his defence he knew the C150 was just a "starter plane" and after
he'd got some hours on it was going to buy up, and move the 430s to the
new aircraft.

Ah, I didn't recall that. When I've looked at putting one 430 in my
plane I've been quoted between $4K to $5K just for installation. Maybe
its somewhat less in a C150 but thats still a lot of dead presidents.

-Robert