To Order your vehicle without a deposit isn't that strange. How well is your relationship with the said dealer, how many or often have you made a purchase from that dealer, all play into the question of the amount for the deposit.
Less give this some thought, exhaust muffler, 20-30 lbs, vs a 12gal fuel tank???? Option 1. Remove that large weighted can, and replace it with a larger fuel tank, Now that's a novel idea.