try Amazon.com in the category books the type auto repair in the subject box. you can find repair manuals for your ride brand new, at a used price. i found my haynes repair manual there and i paid $7 new that you would pay $20+ for at any retail auto parts store. haynes manuals are very detailed and very easy to understand.
Cap and distributor / rotor system
No, Dodge does not use inertia/reset swithces.
junk yard
The 318 provides about 230 HP while the 360 provides about 190hp
A Dodge B250 Van does not have a mass airflow sensor.
Under the hood, in the black box near the battery
I have a 1989 Dodge B250...it has overdrive
No.
No.
Center of the firewall.
Yes
we need more info on this application like what year and what is a b250 i would suppose it was a dodge