straight pipes

[im tha best]

I have a 68 lwb and it has a i6, i think its a 250 or 292 im not sure, with a split header and i was fooling around the other day and took one exhaust pipe off just to see what it'd sound like, and, boy oh boy was it loud and mean, but i soon realized that i lost most of my back pressure and most of my horses. i called a friend and he told me that if i cut my pipes to right behind the muffler i'll get about the same sound and still have my backing pressure and all my horses will stay the same. i was just wondering what you guys have to say about it? i want it loud but i dont have the money for flows or packs right now.