Like this
https://www.ebay.com/itm/383482927388?epid=1017813805&hash=item59495d191c:g:MvAAAOSw9D1egNJI:sc:ShippingMethodExpress!33126!US!-1
or this one
https://www.ebay.com/itm/284790739429?epid=673196473&hash=item424ed9d1e5:g:tWIAAOSw87dia0Vv
something like this might work
https://www.ebay.com/itm/384692079853?epid=169109178&hash=item59916f4ced:g:u5cAAOSw9khh6xPz:sc:ShippingMethodExpress!33126!US!-1
I have seen similar ones with 2 4" round filters pointed forward but I can't seem t locate one right now .
I generally use Proform with adjustable air bleeds & 2x the CI for size .
With Eddy you have to change both the metering rods & the jets to make small jetting changes & there is no air bleed adjustment if the cam is not stock in your engine .
I have always found the opposite , the 275 is too narrow & 60 makes it too darn tall , I went with a 295 /50 , with the narrowed diff 305-315 width should easily fit especially with a 17" rim
I would start with a compression test , & you can get a cheap camera to plug into a smart phone that will fit in the spark plug hole to take a look inside also .
the spring dampens the piston movement for softer shifts , the faster it shifts the less damage / wear to the clutches , I would always make them shift harder .
I have used the Jaguar clutch , it is the right bolt pattern & short & combined that with a 6 blade Flex-A_Lite fan , it is a great alternative & a reasonable price
The cord should unplug from the heater , there will be a frost plug to fit the hole but they can be hard to install if there is not a room to drive them in .
The Mopar trans has a longer throw between Reverse & Park than the rest of the gears so generally you can get 1-2-D-N-R to line up but park wont go , if you get Park to work the rest of the gear don't line up correctly .
Cheetah shifters are the only ones I knoow of that are designed to work...