how to find heartand torque 301 aluminum frame members

[cchristanis]

So. We are picking up our new TH this weekend :
http://ballardscampingcenter.com/Home/Hidden/InventoryDetails/tabid/15329/invid/721980/Default.aspx
We got it for $29500 OTD. Dealer added some cabinet doors that dont come with the unit for free too (where they are open but shouldnt be). I thought it was a decent price.
Anyway, the dealer told me its aluminum frame with rubber walkable roof. How can you find the framing members. My main concern is adding some drings in the garage (1 in each corner). Im going to have all sorts of toys in there and 2 motorcycles being the heaviest at around 700 each. i think there were only 4, I dont remember. Thats just not gonna cut it. I could probably find the ones in the garage floor cause you can see the frame underneath. i want to drill into the frame and not the floor. What about the walls. Are they 16" on center, 18, 24 etc? Thanks I know Im going to be wanting to add things maybe to the garage walls too and wnat to use the frame and not drill into anything hollow.

[ctpres]

When temp and humidity conditions are right you can see stud locations in early AM. Moisture/dew will be concentrated along studs and crossmembers but areas with insulation will be dry. Take pictures.

[Bob_Vaughn]

A electronic stud finder works for me.....I use it all the time...