Removing engine oil pan?
 

Today I tried to remove the engine oil pan to replace the sealing, there is a moderate leak from the seal I used Engine Oil Dye.
But the problem I'm facing is that the thing I think you guys call it "sub-frame" is under the engine oil pan which is impossible to remove the engine oil pan without removing the sub-frame because it blocks about 4 bolts.
I saw this great DIY engine mount replacement but it apparently requires me to remove the sub-frame.
My question is, is this the only way to do it by removing the sub-frame because the sub-frame has many attachments with the caster arms "The things that have bushings" and seems to hold the engine I'm afraid if I removed the bolts the engine will fall down or something.
And sorry for my bad English.
Some pictures for the problem:
https://cimg1.ibsrv.net/gimg/www.clu...36db44dbd9.jpgThe sub-frame blocking the engine oil pan
https://cimg2.ibsrv.net/gimg/www.clu...d1055dd862.jpgTwo visible bolts and two hidden ones behind, even the visible ones can not be removed without removing the sub-frame.
https://cimg6.ibsrv.net/gimg/www.clu...0dc303b00a.jpgI checked the steering wheel oil level didn't change since the last time i saw it, about 2 months ago.

On some cars (not certain on the SC430 but looks like it might be in this category) the engine must be jacked up an inch or so in order to provide access to the remaining bolts on the oil pan.

I can't find any good spot to jack the engine except if i jack it on the oil pan but i think the jack will dent the oil pan.

Do NOT jack it on the oil pan.

do you have access to an engine hoist?

No i don't have one, where i live can't rent it either.
If i buy a hoist will it be easier to it?

This may help -
http://www.flawlessfitment.com/2015/...ement-and.html