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Tulf Tach produces pichup truck bumpers that are sold on a wholesale basis to new car retailers. The average bumper sales price is $170. Normal annual sales wolume is 480.000 units. which is the company's maximum production capacity. At this capacity, the company's per-unit costs are as follows: A key component in producing bumpers is the mounting hardware used to attach the bompers to the vehicles. Bitmingham Mechanical has offered to sell Tuff Tach as many mounting units as the company needs for $20 per unit. If Tuff Tach accepts the offer, the released facilities currently used to produce mounting hardware could be used to product an additional 7,680 bumpers. What alternative is more desirable and by what amount? (Assume that the company is currently operating at its capscity of 480,000 units.) Note: Do not use a negative sign with your aniswer. Make the units to avoid an incremental cost from putchasing the units of t s