I have just purchased a '68 conv that was originally a 6 cyl car. The owner installed a 454 with a th400 and did not complete the job. I have since finished the work and noticed it acts like a dog. So, while examining the carb (holley dp 750) I noticed the secondaries don't open all the way. It seams the accel cable is too short Does anybody know if any big block accel cable will work? Also, I noticed there is no kickdown linkage going to the trans. Should there be? Can anybody explain what it should wat it should look like (or at least what parts i need to buy)? Thanks in advance for all of your help.