05. The bolts supplied with the new tubes were a bit long, with some interference between tube and flange. After a quick trip to the grinding wheel, the bolts slipped right in. Our problems began when we saw the left collector dumping right into the Milodon oil pan. The new pan interferes with the collector, while the stock pan would clear fine. Instead of just hooking up the Edelbrock crossover pipes for a bolt-in installation, we were stuck.