I already knew dies were interchangeable, and I've verified that top punches are also. I gave the Lube-a-Matic the once over yesterday and decided I would keep it and peddle the 450. The RCBS unit just appears to be a little more sturdy and I like the integral pressure handle.
I swapped the heater units between the two also. The RCBS was mounted to a Midway heater which has a much larger footprint than my old Lyman heater. So, I will be peddling a 450 with a Midway heater. I have some molds to sell also. I'll be listing them sometime next week.
