I was really sweating about installing the headers to find out they were not so bad l. It took about an hour to install the TTI headers. Lifted the motor about 1 1/4 inch on the driver side and dropped the the driver side in through the top. After we bolted that side down we then lift the passenger side up about an inch. put cardboard on the inner fender well and pushed the motor over until we were just touching the headers on the driver side wheel well. The passenger header slid in easily through the bottom..Here are some pictures after the install.