Coolant Bypss Hose ?
this is one of the situations where u just have to ask to walk into the back of napa behind the counter and have a look....when i had a LA 318 in mine..i still couldn't get the correct part # hose to even fit, now that i have my magnum headed/intake 408 LA base motor (yours a blueprint too maybe?) i just found a parts store random hose that worked and cut it to fit, slight kink but nothing major..it's just a weird angle with the mag intake.