Virtually all consumer lawnmowers/lawn tractors are finish mowers. They are used for the finish cut. Also produced are Brush Mowers which are called rough cut mowers.
What kind of lawn mower are you changing blades on?
You can find a cheap contractor for finishing your basement by going to servicemagic.com or you can visit the website totalbasementfinishing.com for your needs.
on the mower deck
No you can't use a golf cart mower on a lawn mower. You have to find a muffler that matches the make and model of the lawn mower.
If this is the 500 series Weedeater mower, try Walmart. They have this mower in stock.
You can find a wiring schematic for an 88 Craftsman GT ride on lawn mower at various tractor supply stores. You can also find it in the mower's owner's manual.
I think the best place to find ideas on finishing your Basement is HGTV on your cable tv. They always have good shows on their about decorating your home.
model type and code of the mower and from the engine. generally it is metal stamped on the engine and the unit model is near the rear of the mower.
I need help getting a spindle assembly off a scag mower.
Lawn mower parts for a Fiskars mower can be found using the Fiskars site. This shows the user where the locations of all the Fiskars resellers are. The resellers will have spare parts.
Napa
You can get basement finishing ideas at your local home improvement store. Look in your local yellow pages or newspaper to find a store, and you can ask a specialist there for ideas.