Intake manifold removal

[Nizmo 240sx93]

I have a problem i'm sure it's something simple i've just over looked. I have a 1993 Nissan 240sx with over 180,000 miles on it. I noticed one of the injectors was bad after i removed the stock fuel rail. I had another fuel rail the previous owner gave me. I installed the other fuel rail and noticed after removal the bolts that hold the rail in place were striped. I have another engine i'm having built so i have the top of the intake manifold off the other engine but i'm having problems geting the lower half to drop low enough to clear the top. I removed two blots on a y bracket right behinde the oil filter and one from the bracket holding the altinator to the front of the oil filter. Now the lower half drops down but even with everything lose it wont clear. I dont know if i'm missing a bolt that is still holding it. I hope someone can help me since u have to remove it to get to the secondary butterflys. My e-mail address is [email protected] thanks for all the help