At my store, we wont put the TRD S/C until the purchase of the vehicle is made (I've already tried, and they wont do it)...
BUT YES, we do allow you to finance the blower & labor installation in the total purchase of the vehicle:top:
Scion and Toyota have different guidelines. Scion FORBIDS any dealer to allow a customer to finance the TRD S/C; they must come back within 24 hours after the purchase the vehicle to purchase the blower SEPARATELY.
For the 2009 Toyota (not Scion)lineup, their are NO guidelines on the 4.0 TRD S/C...BUT It is harder to get the loan bought from TFS or another bank because of the extra 4-5k that you have to finance from the S/C. So you might be able to get financed for the truck, but not the blower...then you would have to buy it seperately. If you have excellent credit, it shouldn't be too much of an issue!
*Keep in mind that every region of Toyota is different, just because it is this way here at CATD; doesn't mean its the same guidelines as someone in the South, or West