Need help rattling noise

[DSM Chase]

For some reason I have this really loud rattling coming from what sounds like under the passenger seat. It only happens in first gear when I am starting off, and when i let off then gas and coast or if I hit a bump. Everything is tight, exhaust is not rattling t case is new new trans and clutch it even did it before my new trans clutch and t case so it's not them

 

[DSM Chase]

i have no cat

 

[Rsawd95dsm]

My problem was even tho the exhaust is nice and tight the brakets were still hitting the underneath of the car when I got on it. Check all the exhaust brackets to make sure they clear from the car

 

[jrs187]

could be the hanger bearing on the drive shaft. just a thought but doesnt hurt to check it out.