will a 1969 442 400/ 4 speed bolt into 1970 with a 455/3 speed? your product might possibly be a lot better than the counters what would make the real difference in the sales is how you present it when in front of your potential customers. the measure of channels must be sufficient as not to make high air speeds. the cat waited for them in the middle of a narrow hallway. crisp lettuce, tomato, onions, cucumbers, shredded cheese and croutons. please see the attachment for specific results. hopefully, this is what you're asking for. 