It will work fine. The 4 bolts will hold the engine. HOWEVER, buy 4 grade 8 bolts. I also like the 2 x 4 idea. I do that also. Never had one fall off, and I've been doing this for over 40 years.
Same here , altho I did add a brace to the lower upright on the cheap stand before hanging my 440/505 on it .
Also a work platform on the back, behind the roller tube for laying tools and parts on .
