Retrofit Kits for lighting

[Wizardndog]

I have had my 135 gal glass tank for many years. It came with a 48" 40w flourescent tube light in a 72" narrow light hood. This fixture is shot. I found many burn marks in the plastic. I have been looking at new lighting and am appalled at the pricing (some of the prices being just short of the down payment on a new truck). Has anyone used one of the retrofit kits? I have been looking at the Sunpaq retrofit kits but I am not sure the dual daylight lamps will fit. I want plant this tank heavily, so the old 40w isn't very good for that in any case.