The heater was an after market unit that was plumbed into the tub. Hoses ran through a custom hole in the bulkhead, over the passenger seat and into the heater. The stock heater was toast but I'll eventually rebuild it. The aftermarket blows like 40K BTU according to summit racing http://www.summitracing.com/parts/sum-991106/overview/
A buddy just fabbed up a shroud and we mounted it, I'll let you all know how it works out.
Color is a commercial coating, I believe by PPG or Commerical Performance Coatings. It's called "Woodland Green" It's not a LR original color.