What it is?

Any ideas on what the circled objects are, i have modeled the things on the engine but i dont what they are so that i know how many i need.

here are some updates



here are some updates


Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=13&t=33922
You'll find that the engine "bumps" are the blisters to provide clearance for the valve rockers......
(Durn kids too used to them tooorbine enjuns and don't know about real enjuns!)
it appears to be as you said rockers, as the exaust is farther down, closer to the piston head
http://www.enginehistory.org/usaf.htm
on the very bottom
(Walk Around No.12 - B-25 Mitchell - Squadron Publications)The "Clayton S Stack" configuration of exhausts was introduced on the production line with the first B-25C-15,serial number 42-32383 and was standard on all subsequent B-25s.
Well there seems to be a lot of gray matter between the G, H, and, J
so you think i can get away with pentaganal bumps around the engines?
You would be at the mercy of those who cultivate nits - (also known as rivet counters or nit-pickers):