Never drove never worked on a GT 40 before so i could use a little direction. I have built 2 factory fives and worked on cars before just not this one and i didnt take it apart--and the guy that owned it before me is no longer with us. Im ready to insstall 427 Rousch with McCloud dual disc clutch with hydraulic throw out brg and a RBT 5ds 25. First question is why is my bellhousing have two holes ground into it the top-approx 2x2 inches -they look like they did it so they could get to two bolts or to put the hydraulic lines--not sure. #2 question better to install entire engine/trans as one unit--without the rear body frame ? or put in engine first? #3 throw out bearing has 2 lines going to it--how the heck do you bleed it. Thanks in advance for all your guys help.