Need help with cylinder selection

Hi, I need help selecting a cylinder for pumping. Measures 7.5 length and 5 width
My problem is that my base is right at 5, and towards the top is a full inch more.
Iam worried of choosing the wrong size, does anyone have suggestions on what size to go?
Also if anyone would be so kinda, where is a good place to buy a quality cylinder with a gauge online?

Thank you

This thread covers those questions. Selecting Your Cylinder Size

Though pumping with a smaller base girth is very tricky. Some members cover that in the thread though. I would recommend going through it.

The base girth usually controls the size, but for you, you have to use your max girth to select your cylinder diameter. So enter our size chart with that measurement. If you used your base girth, the cylinder would be too small to allow for total shaft expansion.

I would recommend going with this Leluv pump sold on ebay, but right now he is out of stock of many cylinder sizes. This guy from Arizona has been selling Leluv for years and he will definitely get restocked if you can wait and keep checking back on cylinder status.

Intimate Body Enhancing Methods for sale | eBay

If you can’t wait, I can give you other options, but the price will be higher.

I think it depends on whether you want to increase your base girth or maintain your mushroom head appearance. 1.75” would be good to emphasize base girth expansion and 2” would be better to maintain your current erect profile.

Thank you for the quick replies, yes I was looking at the size chart but was unsure, and rather then waste money I thought it best to ask.

I was worried about buying from a sketchy sites as well, once again thank you