[Healeys] BN1 Questions

[Bob Spidell]

This looks to be a really nice BN1 FS in the Sacramento area. Couple 
things I haven't seen before:

1) What is the rectangular block-shaped piece at the joint of oil pan 
and the bellhousing? Something particular to BN1s?

2) Is that a fan mounted on the underside near the passenger footwell 
(pretty sure this can't be stock)? Is this yet another way to ventilate 
the engine compartment?

https://images.craigslist.org/00a0a_l8zMC86ySSVz_0CI0pO_600x450.jpg