Rams Horn Exhaust Manifolds

[71ChevyCheyenne]

Hey guys, I recently put together a vortec sbc. After doing this I decided to change from my old headers with holes in them to rams horn exhaust manifolds(the corvette style ones). After putting the manifolds on I brought the truck to an exhaust shop and they said they were unable to put exhaust on the truck. This was due to there being no clearance on the passenger side for a pipe they said. Could this be right? Looking in there it looks like there's plenty of room. I know there are guys on here that are running rams horns on their trucks so I'm just curious how to route the exhaust. Thanks