to start - i got the tanabe racing medallion exhaust for my ls integra

second i looked under it to see how the cnonections were on the stock pieces to remove them when i crawled under the joints were rusted like crazy - since i have time alloted for me to go up on my friends lift next week i would like to know how i shoudl go about taking this three bolt connection off. the rust is a mess all over the bolts and flange part. Shall is pray them with oil or dd40. if they break does the exhaust come with more bolts to attach it to the cat (its still in the mail). . . got it from tornactive.com

thanks for the help