What's a good curing BTU?

[Heavykote]

I'm gonna build a large curing box. Probably big enough to cure a motorcycle frame and I was planning on having 1 or 2 propane heaters to cure it with of course with reflective material inside.
What would be the optimum BTU's to aim for?
I could use my little redddy blower heater, but the freakin noise that thing makes.

[pickleboy]

here you go bro. its long but it should help.

http://www.farms.com/sequip/HogSlat_Nov1803.asp

[customandsound]

i did my frame for my bike with 1 100k torpedo heater. In a old stand up freezer. gutted ..