Angle drive leaking

So I was informed during one of my trips to the deal for a recall that my Angle drive is leaking and looks to be the pinion seal. So I saw someone else just paid for that job to be done at the dealer and paid $440. My dealer said they would do it for $375

My question is the parts listed in the invoice is that all I will need for gaskets and such? I have not looked it up but does anyone know how much fluid is in it to replace?

Where is a good place to purchase the parts needed. I have a Slingshot mechanic that used to work at the dealership said he would do it for $180 labor if I get the parts.

Thank you in advance for your replies!

Quote from EricRedSL

Just buy a Quart of 75w140 full syn gear oil and squirt it in the fill hole until it starts to run out.

I am sure it is not leaking badly but I would rather have it fixed. I know there will be some tools I do not have so I will have it done. I have changed and filled the fluid before myself and put in AMSOIL SEVERE GEAR 75W-140 and it also made it super quiet compared to when I had it new. I now have around 38k so it is time to replace it to keep it as good as possible.

Quote from FunCycle

I think I am on the fourth seal (Warrenty) on Sling I and Sling II is leaking

Well if It leaks pretty quickly after that then I will maybe go to just adding it as it needs lol I have enough mileage on it to do a service on it to be safe.

Quote from Bigdog

I think to change the seal you might need a special tool

Probably, which is why I would just have it done. He said $180 for labor if I supply the parts.